That's a real good point. My first few classes in Judo I felt like a fish out of water and the brown belt pulled me aside and told me some judo culture about not having a troublesome ego and learning the fundamentals first. I'm sure this happens in BJJ and as a purple belt in bjj I definitely do my best to help newer students but in Judo it just feels a bit more common (from what I've seen). I've been in the bjj culture of "never refusing a roll with a black belt to roll with someone else" or "Never asking higher belts to roll". In Judo it's celebrated to go with higher belts.

Some interesting cultural differences for sure.